The last decade has seen major advances in the general study of conformal field
theories beyond the special cases of two-dimensional spacetimes or maximal
supersymmetry through the widespread development of the conformal boostrap
[1]}. Particularly notable is the success
of the conformal boostrap in constraining the data
(scaling dimensions and OPE coefficients) of the three-dimensional
critical Ising model CFT [2]}, [3]}, [4]}, [5]},
surpassing
the previous best results using Markov chain Monte Carlo (MCMC)
on regular cubic discretizations of a three-dimensional torus
[6]}, [7]}, [8]}.
This has also driven the development
of improved methods for constructing three-dimensional conformal blocks,
the basis functions of the conformal group analogous to spherical harmonics
for the rotation group [3]}, [10]}, [11]}. These ingredients allow for an accurate
estimate of the four-point functions [12]}
of the critical Ising model.
